Centroid Acorn Plasma Users Manual Beta CNC12 v4.65 rev6
TX and RX Board mounting guidelines.
- The Centroid THC supports only Plasma Units with divided voltage output.
- The TX board MUST be powered with a separate 24 volt power supply
Follow the Hookup schematics and use the meanwell 24 volt provided with the Acorn THC kit.
Search “plasma” to see all the Acorn plasma schematics.
https://www.centroidcnc.com/centroid_diy/schematics/pbrowse.php#
- Mount the TX board as far away from any other components in the cabinet. One of the TX’s jobs is to
isolate any possible Plasma Unit voltage noise/leak/EMI etc so, if that happens it does not destroy the RX
board or the Acorn or any other components.
- Run any wires from the Plasma Unit, Torch Head or machine as far apart from any other control related
wires to isolate them from other wires and components.
- The Plasma Unit’s positive divider voltage is referenced to THC TX GND, see schematic.
- The Plasma Unit’s negative divider voltage connects to the THC TX ANLV connection.
(ANLV = Analog Low Voltage)
- Do Not bend the fiber optic cable tighter than a 2 inch radius. Do not pull on the black fiber part of the
fiber optic cable to remove or insert into socket. Hold the Plastic end to insert or remove the fiber from the
socket on the TX and RX boards.
- Follow good wiring and ground practices to avoid ground loops. Verify Plasma Unit Clamp and TX GND
are same with a good low ohm continuity with an ohm meter.
Page 10 D:\Keith Documents\centroid_acorn_plasma_users_manual_draft27.odt rev27 3-15-22
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